Why are we looking at charts that compare cranking amps? Are we trying to start cars or run amplifiers that require intermittent power? An amp that does 600-1000 watts is not pulling 300 or 2000 amps of current. It may need 50-80 amps max real world. They need to do a proper test for the application these are being used for 50 amps over and over several times a second for years not one burst one time. At this point, the total power, price and durability are HUGE factors. Kinetik has a return rate of less than a percent IN the car audio industry for a reason.
Try to do some of the power bursts claimed by Stinger a few times on their batteries and see what eventually happens. Kinetik recommends a battery for the conditions used (wattage). Kinetik was the first company I had seen put battery sizes to those conditions/recomendations. I see now it is imitated by a few other companies who change "spec" on it quite often. Kinetiks are known for strong recovery after many times under this use.
On a daily system you wouldnt try running 15-20k watts of power (1500-2000amps) on any 1 battery i know of in production for car audio . Using as in near full capability in a daily system. This would be an impropper electrical system. Batteries are not designed to be "maxxed out" after every use. It would greatly shorten the batteries life span as well as the amplifiers.
Kinetik can cover ANY peak demand required for any amp that should ever be hooked to it. There is a reason why they have a good reputation. All the major car audio manufacturers would not be recommending Kinetik if they were junk. Oh, that’s right…and the loudest vehicle in the world also uses Kinetik.
